Include unistd.h in passes/hierarchy/hierarchy.cc (required for access(3))

This fixes compilation errors on Arch Linux.

Signed-off-by: Martin Schmölzer <martin.schmoelzer@student.tuwien.ac.at>

diff --git a/passes/hierarchy/hierarchy.cc b/passes/hierarchy/hierarchy.cc
index f77ded9d23d5e0ab786a91a99226f885b67e2012..01e287e949e35ef41271b61fe31f8fa0671e8cf4 100644 (file)
--- a/passes/hierarchy/hierarchy.cc
+++ b/passes/hierarchy/hierarchy.cc
@@ -23,6 +23,7 @@
 #include <stdio.h>
 #include <fnmatch.h>
 #include <set>
+#include <unistd.h>
 
 namespace {
        struct generate_port_decl_t {